Cartesia Ink 2 vs Speechmatics Linden
Accuracy and speed
Left gets fewer words wrong. Lower has the final text ready sooner.
- Ink 22.39% · 123ms
- Linden2.46% · 147ms
Cartesia Ink 2 is ahead on both datasets together and final-text delay, and Speechmatics Linden on time to first text. The Pipecat Dataset and The Ocular Dataset are too close to call.
Last updated Methodology by Dileep Chagam
Who is better at what
- Overall WER2.63%2.97%
- Pipecat Dataset WER2.39%2.46%
- Ocular Dataset WER3.09%3.93%
- Time to first text1.51s1.19s
- Final-text delay123ms147ms
Lower is better on every measure. Too close to call means the likely ranges overlap. For its voices, see our notes on Cartesia text to speech.
Ink 2 vs Linden FAQ
Which is more accurate, Cartesia Ink 2 or Speechmatics Linden?
Cartesia Ink 2 is more accurate on the public clips. On the 1,000 public Pipecat clips, Cartesia Ink 2 scores 2.63% and Speechmatics Linden 2.97%, so Cartesia Ink 2 makes fewer errors by 0.34 points. On the eight licensed Ocular recordings, Cartesia Ink 2 scores 2.39% and Speechmatics Linden 2.46%, with likely ranges of 2.13 to 2.65% and 2.19 to 2.73%. The ranges overlap, so the difference is too close to call. Word error rate counts incorrect, missing, and extra words, so lower is better.
Cartesia Ink 2 is more accurate on the public clips. On the 1,000 public Pipecat clips, Cartesia Ink 2 scores 2.63% and Speechmatics Linden 2.97%, so Cartesia Ink 2 makes fewer errors by 0.34 points. On the eight licensed Ocular recordings, Cartesia Ink 2 scores 2.39% and Speechmatics Linden 2.46%, with likely ranges of 2.13 to 2.65% and 2.19 to 2.73%. The ranges overlap, so the difference is too close to call. Word error rate counts incorrect, missing, and extra words, so lower is better.
No. Speechmatics Linden finishes the transcript 321ms sooner. Cartesia Ink 2 has the final transcript 1.51s after the speaker stops and Speechmatics Linden 1.19s, at the median. Both are measured on the same 206 streamed turns.
Speechmatics Linden finishes the transcript 321ms sooner, and the two are too close to call on real conversations. A voice agent cannot reply until the final transcript arrives, and the Ocular recordings are real conversations.
Yes, both return partial text before the speaker stops. Cartesia Ink 2 shows first text after 3.09% and Speechmatics Linden after 3.93%, at the median.
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